Publisher My.Games has taken a minority stake in hypercasual developer and publisher Mamboo Games.
The Belarus-based studio was founded earlier this year, but has already secured ten exclusive contracts to help other developers with their projects.
It has already produced a handful of games, including the well-received Billion Builders.
Terms of the deal with My.Games were not disclosed.
Hypercasual games is an area My.Games has begun investing heavily in this year. Back in April, it announced a $10m publishing programme to expand its line-up.
Chief marketing officer Elena Grigoryan says the publisher has received more than 250 applications since its hypercasual department opened.
My.Games is the video gaming division of Russian internet giant Mail.ru, which unveiled the new brand last year.